Question
Who invented the mouse of a
computer?Solution
The computer mouse was invented in 1963 by Douglas Engelbart, an engineer and computer scientist working at the Stanford Research Institute. The first mouse was a wooden shell with two metal wheels on the bottom, which were used to track movement on a surface.
Calculate the perimeter of a circular field with an area of 3675 square meters, using an approximation of π as 3.
The breadth ‘b’ of a room is twice its height and half of its length. Find the length of the longest diagonal of the room
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Ratio of length to width of a rectangular field is 7:4. If the perimeter of the field is 220 metres, then find the area (in m2) of the field.